I was writing a comment on another website, and considered introducing it with a piece of trivia. My classical education kicked into gear, and I wanted to say "Relevant trivium: ..."
I realize I could circumvent my quandary by saying "Relevant piece of trivia: ..." but now I am curious - if the dictionary.com definition of trivia is
1. matters or things that are very unimportant, inconsequential, or nonessential; trifles; trivialities.
Is there a place for the singular "trivium"? That word was used in the Middle Ages to indicate the first three of seven "core curriculum" subjects taught at University: grammar, logic and rhetoric. The next four subjects were arithmetic, music, geometry and astronomy (the quadrivium).
That suggests that the word is taken - but I don't know that for sure.
So at the risk of breaking the rules - here are two questions:
Can one use "trivium" to indicate a single piece of trivia? And if not, what would be the recommended alternative?
Factoid was the only one that sprang to mind. Are there any others?